Cummins swapped Jeep at FASS HQ!
Jake H • May 16, 2024

With a brand-new fuel system and sump installed, this XJ is ready for thousands of miles of daily driver duty! We’d like to extend a HUGE thank you to our friends for bringing it out and allowing us to work on it.



If you’ve got a diesel swap planned, give us a shout! We have an extensive catalog of complete fuel systems for Cummins, Duramax, Powerstroke, and many more—there’s no diesel project we can’t fuel!

We dumped water into the fuel tank of a 2024 F-450_Main Image
By Jake H June 2, 2026
Watch Brad Ekstam and Josh Thornton pour water into a 2024 F-450 fuel tank and see how FASS filters remove it!
RLC Motorsports Upgrades Their Toterhome with FASS Fuel Systems & FASS Connect
By Jake H May 13, 2026
Watch RLC Motorsports install a FASS Fuel System and FASS Connect on their new toterhome built to haul a 3,000+hp Cummins drag truck nationwide!